WEETON

TDS Weeton 740A 740B EN.pdf

Weeton 740A/740B is a two-component solvent-based polyurethane adhesive that is widely used to make high-performance laminating films and exhibits excellent bonding properties in a variety of film/film and film/aluminum foil lamination processes.

Application

The product can be used in structures like PET/AL/PA/PE, PET/VMPET/PE, PET/VMCPP, PET/PET/RCPP, and PET/AL/PA/RCPP, which can also suit high machine-speed process lamination, with good solvent release, heat resistance (Meet PET/AL/PA/PE, PET/VMPET/PE boiling and PET/PET/RCPP;PET/AL/PA/RCPP cooking at 125-135℃), and chemical media resistance (acid, alkali, spicy, ethyl maltol and certain alcohol etc.)

Properties

Directions for use

Add solvent to component 740  to achieve the required solids content, then add component 740B to the diluted component 740 mixture and stir well until the color is uniform. The ratio of the main agent/hardener can be adjusted according to the temperature and humidity, and the solvent moisture content. High Temperature can work for up to 40 minutes at 121°C.

Dilution table

Pot life

The ready-for-use adhesive in closed containers has a working time of about 6 hours. Unused adhesive on the laminator should not be left on for more than 2 hours, if more than 2 hours it should be discarded or it may result in an unstable laminating film. In tropical areas (temperature > 28°C & relative humidity > 60%), the mixed adhesive should be used up within 2 hours.

Recommended Operating Conditions

1. Coating: 740A/740B is suitable for dry film laminating machines with smooth roller or gravure roller. Before mass production, repeated trials should be carried out to determine the fitting roller.

2. Coating weight: Depending on the film or foil combination and the end use of the laminate, the adhesive weight should be above 2.0g/m2 (dry). The coating weight of 3.5 g is suitable for strong chemicals and high temperatures.

For printed laminates the weight has to be adjusted accordingly, The Recommended working solids content of 30%-35%, with the corresponding roller.

3. Pressure adjustment: An appropriate increase in laminating temperature and pressure can improve the bonding strength and surface finish of the laminates. The recommended temperature of the roller is 65-75℃.

4. Curing: Film/film, film/aluminum foil of general, poaching, boiling products at 40 ℃ -60 ℃ curing room 2-7 days after full curing can be slitting, bag making.

5. Film properties: The completely cured 740A/740B film is transparent and odorless.

FDA Compliance

740A/740B is suitable for laminating food packaging materials in accordance with US FDA 175.105 and Chinese GB- 9685. After sizing, the fully cured adhesive material complies with the EU 2002/72/EC and its Supplementary Agreement 2004/19/EC on the restriction of migration of certain substances.

Storage/Transport

Storage: 740A/740B are recommended to be stored in a cool and dry place, away from sunlight and high temperatures. When unopened it should be stored in the original closed container. The main agent 740A is valid for 12 months and the hardener 740B for 12 months. Open the storage container, after use it should be recovered and sealed, and the rest of the product should be used up within a short period of time.

Transport: Please refer to the relevant MSDS for details.

Packaging specifications

740A:20 KG/bucket;

740B:1 KG/bucket

Notes

When using 740A/740B an efficient exhaust hood has to be installed to the coating unit due to safety reasons. The exhaust efficiency has to be checked prior to production by gas analysis for isocyanate concentration in the air. Safety regulations with regard to handling of isocyanates have to be followed as per the guidelines issued by the International Isocyanates

Institute. Please also refer to the local safety instructions as well as our safety data sheet and contact Huitian for analytical support.

As the adhesive contains polyisocyanates, any contact with the skin has to be removed.

Other information and Disclaimer

Film additives - especially in PE, CPP, and EVA copolymer films - slip agent content, type and thickness of the film, the filler, printing inks, pretreatment for printing, and film coating are all critical to the end use and can affect the bonding properties immediately or at a later stage. In order to obtain good lamination results, practical lamination trials and proper testing of the laminates are necessary before large-scale production.

* For detailed information, please refer to Huitian's "Technical Guide to Adhesive Lamination".

HUITIAN Profile

 
Huitian is your reliable partner and satisfies your need for adhesives!

Weeton 823A/828B is a two-component solvent-free polyurethane adhesive for various film/film, film/metalized film and film /foil laminates, widely used in the packaging of food, medicine, daily use chemical, industrial packages. It has low viscosity, good wettability, long pot life, high peeling strength and high laminating speed (450m/min).

The typical applicable structure is as follows +:

• OPP (PET) / met. CPP
• OPP (PET) / CPP (PE)
• PA // PE (CPP)
• AL / PE

+: Film should get appropriate surface tension by corona treatment

Properties

* Mass ratio changes from 100: 50 to 100: 60 depending on the humidity and films.

Directions for use

• Mix Ratio: The standard mass ratio of 823A:828B is 100:50. Adjust the ratio according to product properties, printing inks, raw materials, and production conditions.
• Coating: 823A/828B is applied on special laminating machines with multi roller application system.
• Coating Weight: Depending on the film or foil combination and the end use of the laminate, the adhesive weight may range from 1.2 - 2.5g/m² (dry). For printed laminates, the weight has to be adjusted accordingly.
• Dosing: The adhesive is continuously added in the gap of the application station with a two-component dosing and mixing unit. The amount of adhesive in the gap should be kept at the lowest possible level.
• Pot Life: The pot life of mixed 823A/828B at 40°C is 30-50min with excellent operability
• Laminating conditions: Precise web tension control together with a suitable winding program avoids delamination as well as telescoping and curling effects.
• Cleaning: In case of a machine stop (for more than 30 minutes) the coating unit has to be cleaned with solvents/plasticizer-mixture (observe safety precautions) and the 2-component dosing unit has to be washed. The same cleaning procedure has to follow at the end of the run.
• Curing: The laminates may be rewound and slit after 1-2 days at 35-45°C. Manufacture of triplex laminates is possible 12 hours after duplex production. Complete curing will be achieved after 24 hours at 25-45°C or 3-5 days at room temperature.

 
Typical Use Parameters
 
Storage barrel: 823 A: 40°C 828 B: 35-45 °C
Transport hose: 40 °C
Metering roller: 40 °C
Coating roller: 45-50 °C
Pot life: over 30 mins(mixed)
Application weight: 1.2 - 2.5g/m²
Coating temperature: 40-55°C
Coating speed: 100-450m/min
Curing time: 35-45°C/24–48h (70%RH)
 
FDA Compliance

823A/828B is in compliance with FDA175.105 and GB9685–2008

 
Storage & Transport
Storage: 823A/828B have a storage life of 9 months a room temperature when stored in the original unopened containers. Opened containers have to be closed immediately and the material should be consumed within a short period.
 
Transport: Details can be obtained from the corresponding safety data sheets.
Packaging specifications

823 A: 20kg/bucket; 828 B: 20kg/bucket

 
Notes

When using HT 823A and HT 828B an efficient exhaust hood has to be installed to the coating unit due to safety reasons. The exhaust efficiency has to be checked prior to production by gas analysis for isocyanates concentration in the air. Safety regulations with regard to the handling of isocyanates have to be followed as per the guidelines issued by the International Isocyanates Institute. Please also refer to the local safety instructions and our safety data sheet and contact Huitian for analytical support.

Huitian is your reliable partner and satisfy your need of adhesives!
 

TDS Weeton 711A 711B EN.pdf

Weeton 711A/ harder 711B two-component solvent-based polyurethane adhesive is a two-component polyurethane adhesive for various high-performance film/film laminates.

Application

In a variety of film /film laminating process, it shows excellent bonding performance, including PET/AL/PE, PET/VMPET/PE, PET/VMCPP, PET/PE, OPP/VMCPP. This product has low viscosity and short curing time (Meet the 2-3 layer structure curing, 6-8h slitting and bag making), the film has good wettability and low solvent residues, suitable for high-solid, low-viscosity and high-speed dry film laminating technology.

Properties

Directions for use

• Dilution: The suitable solvent is ethyl acetate, using water content not exceeding 300ppm, when the solvent contains active hydrogen (such as alcohols, and amines), it will react with the curing agent, resulting in a reduction of the curing agent and affect the strength; Do not use aromatic or alcoholic solvents.
• Preparation of Adhesive Mixture: After having added the right quantity of solvent to 711A and having achieved the required solid content, 711B has to be stirred into the 711A solvent mixture.
• List of Dilution: When the ethyl acetate is used for dilution to obtain an accurate solid content, the amount required should refer to the following table

Viscosity is based on the average viscosity of the Zahn Cup 3# (25°C)

4. Pot life: Unused adhesive on the laminating machine should be discarded if it has been stored for more than 8 hours, otherwise it may affect the product performance of the laminated film. Particular attention should be paid to laminating films that require high-temperature treatment and laminating films filled with irritants.

Tropical area (Temperature >28°C + humidity >60%) pot life: Ready-for-use adhesive should be used up within 2 hours.

5. Coating: 711A/711B is suitable for dry film laminating machines with smooth roller or gravure roller. Before mass production, repeated trials should be carried out to determine the fitting roller.

6. Coating weight: Depending on the film or foil combination and the end use of the laminate, the adhesive weight may range from 2.0g/m² (dry). For printed laminates the weight has to be adjusted accordingly, it should be approx.0.5-1.0g/m² higher than for unprinted films. The coating amount should be adjusted according to the raw materials and processing technology of the product.

7. Dry: The laminating machine should have good air volume, wind speed, wind pressure, and the appropriate temperature to avoid residual solvents. Temperature setting generally follows the gradient principle (55°C-65°C, 65°C-75°C, 70°C-85°C). Adjust the temperature of the oven according to the performance of the processed products, raw materials, and processing technology.

8. Pressure adjustment: An appropriate increase in laminating temperature and pressure can improve the bonding strength and surface finish of the laminates.

9. Curing: The composite film should be aged in the curing room, the curing temperature is 45-55℃, and the curing time is 2-4 days. The preliminary composite film should be matured for at least 12 hours before rewinding or manufacturing 3 layers of composite film, and bag-making should be carried out after complete curing.

10. Film properties: The completely cured 711 polyurethane film is transparent, odorless, elastic and aging-resistant.

Product certification

711A/711B is suitable for laminating food packaging materials in accordance with US FDA 175.105 and Chinese GB- 9685. After sizing, the fully cured adhesive material complies with the EU 2002/72/EC and its Supplementary Agreement 2004/19/EC on the restriction of migration of certain substances.

Storage/Transport

Storage: 711 has a storage life of 12 months when stored at a cool and dry place in unopened containers. Once opened, containers of 711A/711B should be closed tightly again and the material should be consumed within a short period.

Transport: For details please refer to the corresponding safety data sheets.

Packaging specifications

711A:20KG/bucket                  711B:4KG/bucket

Notes

When using 711 an efficient exhaust hood has to be installed to the coating unit due to safety reasons. The exhaust efficiency has to be checked prior to production by gas analysis for isocyanate concentration in the air. Safety regulations with regard to the handling of isocyanates have to be followed as per the guidelines issued by the International Isocyanates Institute. Please also refer to the local safety instructions and our safety data sheet and contact Huitian for analytical support.

As the adhesive contains polyisocyanates, any contact with the skin has to be removed.

Others

Film particularly the types and content of slip agents in LDPE, MDPE and CPP films, film thickness, packed goods, printing inks, pre-treatment, and film coating are of significant importance to the end use of the laminates and may affect the performance properties either directly or indirectly. Therefore, practical laminating tests as well as checks on the laminates are necessary before going into full-scale production. The above information is from the laboratory for reference only.

HUITIAN Profile

 
Huitian is your reliable partner and satisfies your need for adhesives!

TDS Weeton 765A 765B EN.pdf

Weeton 765 is a two-component polyurethane adhesive for high-performance laminates. It shows good adhesion in film/film and film/foil structures and is suitable for Al foil-containing and puncture-resistant packages. It also has good resistance to retort (121°C/40min).

Properties

Directions for use

• Dilution and Preparation of Adhesive Mixture: After having added the right quantity of solvent to 765A and having achieved the required solid content, 765B has to be stirred into the 765A/solvent mixture.
• List of Dilution: When the ethyl acetate is used for dilution to obtain an accurate solid content, the amount required should refer to the following table.

Viscosity is based on the average viscosity of the Zahn Cup 3# (25°C)

• Pot life: The ready-for-use adhesive in closed containers has a working time of about 8 hours. If the laminating machine doesn’t use adhesive, the retention time shouldn’t be more than 2 hours. Otherwise, the adhesive should be abandoned, or it may result in unstable composite films.Tropical area (Temperature >28°C + humidity >60%) pot life: Ready-for-use adhesive should be used up within 2 hours.
• Coating: 765 is suitable for dry film laminating machine with smooth roller or gravure roller. Before mass production, repeated trials should be carried out to determine fitting roller.
• Coating weight: Depending on the film or foil combination and the end use of the laminate, the coating weight may be above 2.8g/m² (dry). For printed laminates, the weight has to be adjusted accordingly.
• Pressure adjustment: An appropriate increase in laminating temperature and pressure can improve the bonding strength and surface finish of the laminates.
• Curing: Stored in curing chamber (40-50°C), the laminates will be ready for cutting in 72h, at least 48h.
• Film properties: The completely cured 765A/765B film is transparent, odorless, elastic and aging-resistant.

Product certification

765A/765B is suitable for laminating food packaging materials in accordance with US FDA 175.105 and Chinese GB- 9685. After sizing, the fully cured adhesive material complies with the EU 2002/72/EC and its Supplementary Agreement 2004/19/EC on the restriction of migration of certain substances.

Storage/Transport

Storage: 765 has a storage life of 12 months when stored at a cool and dry place in unopened containers. Once opened, containers of 765A/765B should be closed tightly again and the material should be consumed within a short period.

Transport: For details please refer to the corresponding safety data sheets.

Packaging specifications

765A:20KG/bucket                  765B:4KG/bucket

Notes

When using 765 an efficient exhaust hood has to be installed to the coating unit due to safety reasons. The exhaust efficiency has to be checked prior to production by gas analysis for isocyanate concentration in the air. Safety regulations with regard to the handling of isocyanates have to be followed as per the guideline issued by the International Isocyanates Institute. Please also refer to the local safety instructions as well as our safety data sheet and contact Huitian for analytical support.

As the adhesive contains polyisocyanates, any contact with the skin has to be removed.

Others

Film particularly the types and content of slip agents in LDPE, MDPE and CPP films, film thickness, packed goods, printing inks, pre-treatment, and film coating are of significant importance to the end use of the laminates and may affect the performance properties either directly or indirectly. Therefore, practical laminating tests as well as checks on the laminates are necessary before going into full scale production.

 
Huitian is your reliable partner and satisfies your need for adhesives!

TDS Weeton 728A 728B EN.pdf

Weeton 728 is a two-component polyurethane adhesive for various film/film and film/metalized film laminates. This product has good flexibility and good transparency, can effectively reduce the characteristics of aluminum transfer, and prevent the phenomenon of tunnel.

Properties

Directions for use

• Dilution: Suitable solvents are ethyl acetate, and Methylethylketone provided that the water content does not exceed 300 ppm. Do not use aromatic or alcoholic solvents.
• Preparation of Adhesive Mixture: After having added the right quantity of solvent to 728A and having achieved the required solids 728B has to be stirred into the 728A/solvent mixture.
• List of Dilution: When the ethyl acetate is used for dilution, to obtain an accurate solid content, it is required to refer to the following solvents.

Viscosity is based on the average viscosity of the Zahn Cup 3# (25°C)

4. Pot life: The ready-for-use adhesive in closed containers has a working time of about 8 hours. If the laminating machine doesn’t use adhesive, the retention time shouldn’t be more than 4 hours. Otherwise, the adhesive should be abandoned, or it may result in unstable laminated film.

Tropical area (Temperature >28°C + humidity >60%) pot life: Ready-for-use adhesive should be used up within 2 hours.

5. Coating: 728 is suitable for dry film laminating machines with smooth roller or gravure roller. Before mass production, repeated trials should be carried out to determine the fitting roller.

6. Application weight: Depending on the film or foil combination and the end use of the laminate, the adhesive weight may range from 2.0g/m² (dry). For printed laminates the weight has to be adjusted accordingly, it should be approx.0.5-1g/m² higher than for unprinted films.

7. Dry: The laminating machine should have good air volume, wind speed, wind pressure and the appropriate temperature to avoid residual solvents. Temperature setting generally follows gradient principle (55°C-65°C, 65°C-75°C, 70°C-85°C). Adjust the temperature of the oven according to the performance of the processed products, raw materials, processing technology.

8. Pressure adjustment: An appropriate increase in laminating temperature and pressure can improve the bonding effect and surface finish of the laminates.

9. Curing: Stored in a curing chamber (45-55°C), the laminates will be ready for cutting in 24h. The curing time should be extended if the laminates are used for bagging.

10. Film properties: The completely cured 728 polyurethane film is transparent, odorless, elastic and aging-resistant.

Product certification

728A/728B are suitable for laminating food packaging materials in accordance with US FDA 175.105 and Chinese GB- 9685. After sizing, the fully cured adhesive material complies with the EU 2002/72/EC and its Supplementary Agreement 2004/19/EC on the restriction of migration of certain substances.

Storage/Transport

Storage: 728 have a storage life of 9 months when stored at a cool and dry place in unopened containers. Once opened, containers of 728A/728B should be closed tightly again and the material should be consumed within a short period.

Transport: For details please refer to the corresponding safety data sheets.

Packaging specifications

728A:20KG/bucket

728B:4KG/bucket

Notes

When using 728 an efficient exhaust hood has to be installed to the coating unit due to safety reasons. The exhaust efficiency has to be checked prior to production by gas analysis for isocyanate concentration in the air. Safety regulations with regard to the handling of isocyanates have to be followed as per the guidelines issued by the International Isocyanates Institute. Please also refer to the local safety instructions as well as our safety data sheet and contact Huitian for analytical support.

As the adhesive contains polyisocyanates any contact with skin has to be removed.

Others

Film particularly the types and content of slip agents in LDPE, MDPE and CPP films, film thickness, packed goods, printing inks, pre-treatment, and film coating are of significant importance to the end use of the laminates and may affect the performance properties either directly or indirectly. Therefore, practical laminating tests as well as checks on the laminates are necessary before going into full-scale production.

Huitian is your reliable partner and satisfies your need for adhesives!

 TDS Weeton 720H 700 EN.pdf

Weeton 720H/700 is a two-component polyurethane adhesive for various film/film and film/foil laminates. The product has high initial adhesion, high peeling strength, good transparency, and can effectively prevent the tunnel phenomenon.

Properties

Directions for use

• 1. Dilution: The suitable solvent is ethyl acetate, using water content not exceeding 300ppm, when the solvent contains active hydrogen (such as alcohols, and amines), it will react with the curing agent, resulting in a reduction of the curing agent and affecting the strength; Do not use aromatic or alcoholic solvents.

  2. Mixing method: After having added the right quantity of solvent to 720H and having achieved the required solid content, 700 has to be stirred into the 720H/solvent mixture.

  3. List of Dilution: When the ethyl acetate is used for dilution to obtain an accurate solid content, the amount required should refer to the following table

Viscosity is based on the average viscosity of the Zahn Cup 3# (25°C)

4. Pot life: The ready-for-use adhesive in closed containers has a working time of about 8 hours. If the laminating machine doesn’t use up adhesive, the retention time shouldn’t be more than 4 hours. Otherwise, the adhesive should be abandoned, or it may result in unstable laminated film.

Tropical area (Temperature >28°C + humidity >60%) pot life: Ready-for-use adhesive should be used up within 2 hours.

5. Coating: 720H/700 is suitable for dry film laminating machines with smooth roller or gravure roller. Before mass production, repeated trials should be carried out to determine the fitting roller.

6. Coating weight: Depending on the film or foil combination and the end use of the laminate, the adhesive weight may range from 2.0g/m² (dry). For printed laminates, the weight has to be adjusted accordingly.

7. Pressure adjustment: Appropriate increase in laminating temperature and pressure can improve the bonding effect

and surface finish of the laminates.

8. Dry: The laminating machine should have good air volume, wind speed, wind pressure and the appropriate temperature to avoid residual solvents. Temperature setting generally follows gradient principle (55°C-65°C, 65°C-75°C, 70°C-85°C). Adjust the temperature of the oven according to the performance of the processed products, raw materials, processing technology.

9. Curing: Stored in a curing chamber (45-55°C), the laminates will be ready for cutting in 24h. The curing time should be extended if the laminates are used for bagging.

10. Film properties: The completely cured 720H/700 polyurethane film is transparent, odorless, elastic and aging-resistant.

Product certification

720H/700 are suitable for laminating food packaging materials in accordance with US FDA 175.105 and Chinese GB- 9685. After sizing, the fully cured adhesive material complies with the EU 2002/72/EC and its Supplementary Agreement 2004/19/EC on the restriction of migration of certain substances.

Storage/Transport

Storage: 720 has a storage life of 12 months when stored at a cool and dry place in unopened containers. Once opened, containers of 728A/728B should be closed tightly again and the material should be consumed within a short period.

Transport: For details please refer to the corresponding safety data sheets.

Packaging specifications

720H:20KG/bucket

700:3.5KG/bucket

Notes

When using 720 an efficient exhaust hood has to be installed to the coating unit due to safety reasons. The exhaust efficiency has to be checked prior to production by gas analysis for isocyanate concentration in the air. Safety regulations with regard to the handling of isocyanates have to be followed as per the guidelines issued by the International Isocyanates Institute. Please also refer to the local safety instructions as well as our safety data sheet and contact Huitian for analytical support.

As the adhesive contains polyisocyanates any contact with skin has to be removed.

Others

Film particularly the types and content of slip agents in LDPE, MDPE and CPP films, film thickness, packed goods, printing inks, pre-treatment, and film coating are of significant importance to the end use of the laminates and may affect the performance properties either directly or indirectly. Therefore, practical laminating tests as well as checks on the laminates are necessary before going into full-scale production.

 
Huitian is your reliable partner and satisfies your need for adhesives!