Hot melt adhesive is a kind of 100% thermoplastic adhesive with green environment protection and stable performance. EVA hot melt adhesive and polyolefin hot melt adhesive are mainly used in the packaging industry.

 

EVA hot melt adhesive: it produces hot adhesion phenomenon when heated and becomes solid when cooled.

 

Polyolefin hot melt adhesive: it is more suitable for EVA type hot melt adhesive with less adhesive amount and higher bonding strength.

 

The advantages of using hot melt adhesive for packaging

 

1) The printing scheme that is beautiful and does not affect the package;

 

2) Convenient transportation, protection and storage management;

 

3) Conducive to automation equipment, improve efficiency;

 

4) Environmental protection, resource conservation and environmental protection.

 

Application Case One

 

For attaching straw to tera pak

 

Industry involved: Milk, juice, beverage industry (mainly Tetra Pak and Eclin Pak)

 

Common materials: PP bag, cardboard plastic film

 

Performance requirements: healthy, environmental, low odor, low temperature resistance, moderate bonding strength, can adapt to high-speed pipe sticking machine, no blocking machine.

 

Consideration:

 

1) Tetra Pak and Ecoline respectively have different substrate properties;

 

2) Speed of packaging line;

 

3) Storage environment (low temperature resistance).

 

Application Case Two

 

For (automatic)Carton sealing

 

Industry involved: mineral water, drinks, beer, milk, canned goods, medicines, toys, and other carton sealing.

 

Common material: corrugated paper, cardboard

 

Performance requirements: certain cohesion and bonding strength; Reasonable opening hours; Be able to adapt to automatic gluing equipment; With the product storage environment, adapt to different temperature changes.

 

Consideration:

 

1) Resilience and folding mode of corrugated board of different grades, as well as surface breaking strength;

 

2) Light coated cardboard surface;

 

3) Coordination of opening time, curing time and pressing time of adhesive;

 

4) Carton pressing mode (such as fixed type, spring type);

 

5) Stacking method, loading weight, service temperature and other conditions;

 

5) Temperature of filling items.

 

Application Case Three

For box/colored box sealing

 

Industries involved: noodle boxes, instant noodle boxes, biscuit boxes, wine, seasoning, cigarette boxes, medicine boxes, ice cream cones, paper buckets, candy boxes, gift boxes, etc.

 

Common materials: coated paper, pit paper, white cardboard, kraft paper, cardboard, or PP, PET, PVC, PE adhesive.

 

Performance requirements: green environmental protection, no pollution; Reasonable opening time, able to adapt to automatic gluing equipment; With the product storage environment, adapt to different temperature changes.

 

Consideration:

 

1) Paper contact surface: water, oil polish; UV glazing; PE, PP glazing (coated)

 

2) Filling temperature: such as: soy sauce (about 40 ℃); Sweet chilli sauce (about 50~70 ℃); Vinegar (about 65~70 ℃); Satay sauce (90 ℃); Oil/lubricating oil (40~60 and 90 ℃)3) Ambient temperature: low temperature storage, high temperature baking, etc.

 

Application Case Four

 

For EPE/packaging positioning

 

Industry involved: all kinds of goods, gifts, fragile packaging materials processing industry.

 

Common materials: Pearl cotton (EPE), cardboard, wood, foam board.

 

Performance requirements: green environmental protection, no pollution; Strong adhesive force.

 

Consideration points: substrate, gluing equipment, use environment, etc.

 

Application Case Five

 

For handle bags

 

Industry involved: packaging printing, bag making industry.

 

Common materials: coated paper, pit paper, white card paper, kraft paper and fiber, twine, etc.

 

Performance requirements: high bonding strength, can use machine high speed glue.

 

Consideration points: substrate, gluing equipment, bonding area, compressive force, etc.

 

Application Case Six

 

For express/courier bags

 

Industry involved: express bags, bubble bags, envelopes, packaging bags, wipes box sealing edge field.

 

Common materials: co-extrusion film, bubble bag, pearl film, paper, etc.

 

Performance requirements: soft material peristaltic not open glue, stable performance.

 

Consideration points: substrate, gluing equipment, etc.

 

Application Case Seven

 

For cosmetics、gift box

 

Industry: cosmetic case lens fitting, lipstick bottle, bottle cap and other fields; PP, PET, PVC, PE and other materials fitting field.

 

Common materials:

 

1) Plastic materials: PE, foaming materials (EPE), PVC, PE film, PP film/sheet, PET film/sheet, PP corrugated board, PS;

 

2) Metal materials: tin cans, aluminum cans, aluminum foil.

 

Performance requirements: the substrate has strong adsorption, stable performance, low odor.

 

Consideration points: substrate, pressing method, product use method, etc

Prev: Hot melt adhesive seven applications in packaging industry Next: The main advantage of different component sealant