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Plastic composite modified with adhesive
by：CSSSLD
2021-01-23
Wen injection tooling/VIP
between each composite material, add the appropriate binder, to improve the strength of the composite material composite. Plastic composite modified adhesive for dry and wet mainly including single group pressure sensitive adhesive and two-component polyurethane adhesive.
one-component pressure sensitive adhesive. Pressure sensitive adhesive is made up of elastomer increase the emulsion adhesive, organic solvents and so on has the, elastomers mainly include natural rubber, synthetic rubber and acrylic ester 3 kinds. Emulsion glue drying as pressure sensitive adhesive, the adhesive can be long-term viscosity without curing, and seems to be not stem, so also known as the stickers. He has sticky relay on a variety of materials, but on the composite material such as OPP, PET paper use.
the disadvantage of pressure sensitive adhesive to stick relay is not high, can be peeled off, and heat resistance is not good, only suitable for use at room temperature, most of the pressure sensitive adhesive is faulty, some toxicity, only in cosmetic packaging and resist dry fresh food packaging applications. Especially acrylic pressure-sensitive adhesive because the smell is too big, has not used in food packaging.
two-component polyurethane adhesive. Two-component polyurethane adhesive consists of two components, the main agent and curing agent, two separate packing at ordinary times, when used according to certain proportion coordination, reoccupy ethyl acetate solvent dilution to certain concentration, and then implement glue compound. Two-component polyurethane adhesive has good adhesiveness, low viscosity when processing, and the advantages of u, ruling, tasteless, so it is one of the most commonly used composite adhesive.
plastic adhesive for
the development direction of development of high solid content, low viscosity adhesive solution. Two-component polyurethane adhesive, the main agent of solid content of 35% or 50%, has now increased to 75%, or 80%, the solid content of curing agent also rise from 75% to 80%. Special instructions, solid content, viscosity decreased after the adhesive at the beginning of the viscous force should not be reduced. In general, a low molecular weight, in the same under the condition of solid content, viscosity is lower than the molecular weight. But low molecular weight, adhesive cohesion is not big, just a composite good after not cure, adhesive, there is no crosslinking curing, stick relay is the viscous force is small at the beginning, easy to cause compounds and wrinkle, such as tunnel failure, so you can't.
to develop in the direction of water soluble or water dispersion. His advantage is water instead of organic solvent, there is no potential risk of burning explosion, no pollution to the environment and risk of poisoning to operating personnel, and the cost is low. But the poor performance of the adhesive, adhesive solution to the base material of the coated glue invasive.
inorganic solvent adhesive. It basically is made up of two-component polyurethane adhesive, the main agent and curing agent in the viscosity at room temperature is higher, but still liquid, semi-solid material. Using solventless adhesives no emissions problem, does not need complex heat drum wind, simple equipment, raw material saving, reducing energy consumption in production, so efficiency is very significant.
more wonderful sharing: 【 Injection molding processing VIP 】 Plastic composite modified with materials, just click.
or copy the link: http://www. csssld。 cn//html/2016/Trade_0410/198。 HTML
nantong on plastic products factory's official website: http://www. csssld。 Cn / /
source network trimmer/injection molding processing and VIP
between each composite material, add the appropriate binder, to improve the strength of the composite material composite. Plastic composite modified adhesive for dry and wet mainly including single group pressure sensitive adhesive and two-component polyurethane adhesive.
one-component pressure sensitive adhesive. Pressure sensitive adhesive is made up of elastomer increase the emulsion adhesive, organic solvents and so on has the, elastomers mainly include natural rubber, synthetic rubber and acrylic ester 3 kinds. Emulsion glue drying as pressure sensitive adhesive, the adhesive can be long-term viscosity without curing, and seems to be not stem, so also known as the stickers. He has sticky relay on a variety of materials, but on the composite material such as OPP, PET paper use.
the disadvantage of pressure sensitive adhesive to stick relay is not high, can be peeled off, and heat resistance is not good, only suitable for use at room temperature, most of the pressure sensitive adhesive is faulty, some toxicity, only in cosmetic packaging and resist dry fresh food packaging applications. Especially acrylic pressure-sensitive adhesive because the smell is too big, has not used in food packaging.
two-component polyurethane adhesive. Two-component polyurethane adhesive consists of two components, the main agent and curing agent, two separate packing at ordinary times, when used according to certain proportion coordination, reoccupy ethyl acetate solvent dilution to certain concentration, and then implement glue compound. Two-component polyurethane adhesive has good adhesiveness, low viscosity when processing, and the advantages of u, ruling, tasteless, so it is one of the most commonly used composite adhesive.
plastic adhesive for
the development direction of development of high solid content, low viscosity adhesive solution. Two-component polyurethane adhesive, the main agent of solid content of 35% or 50%, has now increased to 75%, or 80%, the solid content of curing agent also rise from 75% to 80%. Special instructions, solid content, viscosity decreased after the adhesive at the beginning of the viscous force should not be reduced. In general, a low molecular weight, in the same under the condition of solid content, viscosity is lower than the molecular weight. But low molecular weight, adhesive cohesion is not big, just a composite good after not cure, adhesive, there is no crosslinking curing, stick relay is the viscous force is small at the beginning, easy to cause compounds and wrinkle, such as tunnel failure, so you can't.
to develop in the direction of water soluble or water dispersion. His advantage is water instead of organic solvent, there is no potential risk of burning explosion, no pollution to the environment and risk of poisoning to operating personnel, and the cost is low. But the poor performance of the adhesive, adhesive solution to the base material of the coated glue invasive.
inorganic solvent adhesive. It basically is made up of two-component polyurethane adhesive, the main agent and curing agent in the viscosity at room temperature is higher, but still liquid, semi-solid material. Using solventless adhesives no emissions problem, does not need complex heat drum wind, simple equipment, raw material saving, reducing energy consumption in production, so efficiency is very significant.
more wonderful sharing: 【 Injection molding processing VIP 】 Plastic composite modified with materials, just click.
or copy the link: http://www. csssld。 cn//html/2016/Trade_0410/198。 HTML
nantong on plastic products factory's official website: http://www. csssld。 Cn / /
source network trimmer/injection molding processing and VIP
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