Adhesives
There are mainly three different types of adhesives to select from, depending on the application and on the surface substrates:
Rubber
Acrylic
Silicone
Rubber adhesives can be divided into two main groups: Natural and Synthetic.
1. Natural rubber These adhesive have good tack and shear but limited UV resistance. Such adhesives is mainly used for duct, masking and surface protection tapes.
2. Synthetic rubber Synthetic rubber can be divided in 3 sub categories:
a) Hot-melt rubber which are mainly used for packaging, fixing and carpet tapes. These tapes have lower temperature, UV resistance and ageing performance
b) Solvent rubber based which are mainly used for electrical and foam tapes. These tapes have better temperature and ageing performance but poor UV resistance
c) Butyl rubber tapes are mainly used for sealing applications in the building and construction industry. These tapes have excellent UV and ageing resistance but lower mechanical strength.
Acrylic adhesives can be divided into two main groups: Pure and Modified
1. Pure acrylic These adhesive have excellent bonding, ageing, temperature performance and UV resistance. The main limitations are the adhesion strength on low surface energy substrates and the lower tack than rubber or modified acrylic adhesives. Mainly used for bonding, sealing and protection tapes
2. Modified acrylic These adhesive with good bonding, ageing, temperature performance and UV resistance as well as haveing much better adhesion than pure acrylics on low surface energy substrates (e.g. plastics such as polyethylene and prolypropylene). Mainly used for bonding, lamination and splicing tapes
Acrylic adhesives can be either water (also called emulsion or dispersion) or solvent based. Generally speaking, but not always, solvent based acrylic systems have better resistance to solvents, chemicals and water but are more expensive than water based systems.
Silicone adhesives
Silicone adhesives have excellent temperature, ageing and UV resistance but are significantly more expensive than rubber and acrylic adhesives. Due to the high temperature performance they are mainly used for splicing and masking tapes.
2009年2月25日星期三
Glue gun working principle
Glue gun working principle
1. The working principle:Electric resistance heating wire will melt into the hot melt adhesive rod in hand to promote the role of the pressure valve will melt the plastic material extrusion (top) out.
2. The advantages and disadvantages of hot melt adhesive fixed:Because of its fixed space range, high adhesive force. Fixed-effects and can be returned to the demolition. Operating flexibility, so widely used in toys. Electronics factory, but because of expensive stick prices, fast solidification, easy-drawing, and its application subject to certain restrictions.
1. The working principle:Electric resistance heating wire will melt into the hot melt adhesive rod in hand to promote the role of the pressure valve will melt the plastic material extrusion (top) out.
2. The advantages and disadvantages of hot melt adhesive fixed:Because of its fixed space range, high adhesive force. Fixed-effects and can be returned to the demolition. Operating flexibility, so widely used in toys. Electronics factory, but because of expensive stick prices, fast solidification, easy-drawing, and its application subject to certain restrictions.
ABS glue
ABS glue
Product features The adhesive is based on ethylene-based polymer as the main body of the one-component resin adhesive, adhesive are ABS, AS special adhesive. With easy-to-use, rapid positioning, high bonding strength, curing, etc. non-toxic materials. Workpiece after the heat-resistant adhesive, cold, oil, corrosion resistance and engineering plastics like ABS, for the current bonding ABS, AS Plastics best plastic species.
useIn dry oil-free semi-adhesive surface on one side or double-sided glue, adhesive immediately (not allowed to dry adhesive) to close contacts. Location 5 minutes, 2 ~ 3 hours have a certain strength, after 24 hours to reach maximum intensity.
SpecificationsAppearance: milky white glue type 911, type 912 is a colorless transparent liquidNon-volatile matter: 911 for 20 ± 2%, 912-type to 8 ± 2%Viscosity: 50 ~ 100CPSShear: ABS-ABS ≥ 50kg / cm2
NotesThis product is flammable materials stored in a cool well-ventilated place in accordance with the rules of storage and transportation of flammable materials. When attention to the use of ventilation and to prevent contact with open flame. After the glue used should be kept covered to prevent solvent evaporation. Such as glue thick, available ethyl acetate, acetone dilution. This product shelf-life for one year, expired after passing inspection and may be used.
packaging specifications① each: 500ml × 20 bottles② 20kg plastic bucket
Product features The adhesive is based on ethylene-based polymer as the main body of the one-component resin adhesive, adhesive are ABS, AS special adhesive. With easy-to-use, rapid positioning, high bonding strength, curing, etc. non-toxic materials. Workpiece after the heat-resistant adhesive, cold, oil, corrosion resistance and engineering plastics like ABS, for the current bonding ABS, AS Plastics best plastic species.
useIn dry oil-free semi-adhesive surface on one side or double-sided glue, adhesive immediately (not allowed to dry adhesive) to close contacts. Location 5 minutes, 2 ~ 3 hours have a certain strength, after 24 hours to reach maximum intensity.
SpecificationsAppearance: milky white glue type 911, type 912 is a colorless transparent liquidNon-volatile matter: 911 for 20 ± 2%, 912-type to 8 ± 2%Viscosity: 50 ~ 100CPSShear: ABS-ABS ≥ 50kg / cm2
NotesThis product is flammable materials stored in a cool well-ventilated place in accordance with the rules of storage and transportation of flammable materials. When attention to the use of ventilation and to prevent contact with open flame. After the glue used should be kept covered to prevent solvent evaporation. Such as glue thick, available ethyl acetate, acetone dilution. This product shelf-life for one year, expired after passing inspection and may be used.
packaging specifications① each: 500ml × 20 bottles② 20kg plastic bucket
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