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899 Environmental protection decorative glue FAQ

1, the user with 899 adhesive paper products (wine box products), some batches of sticky good, some sticky after unglued.
A: It is understood that the surface of the paper products glued by the user is covered with a layer of plastic film, and the time after gluing is about 2-3 minutes. Possible causes: a) The plastic film is made of polyolefin material, which is not in the bonding range of the product; b) The surface of the plastic film is smooth and dense, and it is not breathable. After bonding, the residual solvent in the adhesive liquid cannot continue to volatilize, and only the initial adhesive strength cannot reach the best bonding strength; c) The drying time is short and does not meet the drying time required by the instructions. The solvent is not fully volatized, which affects the initial bonding strength and final bonding strength.


2. What problems should be paid attention to if 899 environmental protection decorative glue must be used outdoors?
Answer: If it must be used outdoors, the glue should be fully dried and cured for 72h. If directly in the outdoor construction, should take the necessary measures to avoid light, until the glue fully dry and solidified before use, low temperature use, should also make the glue fully dry and solidified.


3, 899 environmental protection decorative glue environmental performance reflected in what aspects?
A: Environmental protection is mainly reflected in the use of environmental solvent decorative glue, small odor, glue liquid does not contain formaldehyde, toluene, xylene, toluene diisocyanate, as well as halogenated hydrocarbons such as dichloromethane, dichloroethane, trichloroethane, trichloroethylene and other toxic and harmful substances, total volatile organic compounds content is less, The limit value of harmful substances fully conforms to the national standard GB18583-2008 "Limit of harmful Substances in Adhesives of Interior Decoration Materials" standard requirements.


4, 899 decorative adhesive bonding what material is better?
A: Mainly used in room decoration, automotive interior decoration and art advertising and other industries, can be bonded plywood, aluminum plastic board, fire board, density board, aspergillus board, linen board and other wood materials; Also can be bonded to some iron, aluminum and other gold attribute decorative materials and rubber, plastic, leather, carton, paper box, fabric and other materials.
This product does not apply to polyolefin, teflon, silicone, styrene foams and products with anti-stick additives (some new anti-stick coating boards).
For soft PVC material, the durability is poor, there will be shedding phenomenon, it is not recommended to use, if you must use, please try to glue each batch of products, because the amount of plasticizer in PVC will affect the bonding effect. Generally, PVC materials with large amount of plasticizer will fall off after bonding for a period of time, because the plasticizer migrates out of the adhesive material and dissolves the adhesive layer.


5. What are the common problems of using 899 environmental protection decorative glue?
The use of 899 environmental protection decorative glue, if improper operation, often appear the following problems:
(1) bubbling
Bubbling is mainly due to the gas produced between the two adhesive surfaces. Due to the expansion of the gas, the material is deformed. The main reasons for bubbling are as follows:
(2) When bonding, the drying time is too short, too much residual solvent, at the temperature rise, solvent gasification, bubbling.
(2) In rainy days, the water content in the construction glue layer and the water content of the substrate is too high, and the moisture volatilization occurs when the temperature rises
Bubble.
(3) Construction at low temperature is easy to produce too much residual solvent, and bubbling occurs when the temperature rises.
(2) shedding
The main reason for falling off is that the adhesive is smaller than the external force on the object, mainly for the following reasons:
(1) Adhesion of difficult materials, such as polyethylene, polypropylene, polytetrafluoroethylene, silicone, etc., due to the bonding strength is very low, after the force, it is easy to fall off.
(2) The surface of the material is not treated well, there are defilm agent residue or the material itself contains anti-adhesive, so that the bonding strength is reduced, and it is easy to fall off when the force is applied.
③ After bonding for a period of time, the adhesive layer is dissolved. It is the plasticizer that migrates out of the adhesive material. The situation caused by the dissolution of the adhesive layer is generally common in PVC with a large amount of plasticizer, especially in the high temperature season, the plasticizer is easy to migrate.
(3) warping
The reasons for warping are as follows:
(1) The edge is too thick, and the initial adhesive force is small when bonding, and the deformation generated by the material itself makes the edge warped.
② The heat of the material is too high, the heat of the material will produce shrinkage, produce a great shrinkage force, at the same time, the heat intensity of the rubber layer decreases, so that the edge is first pulled apart.


6, a user using 899 environmental protection decorative adhesive synthetic leather and wood, the finished product has been shipped out, is found to have unglued, and the quantity is larger, ask whether the quality problem, how to deal with?
A: Synthetic leather, rubber and PVC plastic products in the processing and forming of most will add plasticizer, if the amount of plasticizer is more, will react with the solvent in decorative glue, resulting in the loss of glue glue, glue liquid is always dry, adhesive individual places naturally open or even fall off. In order to avoid such problems, it is recommended that users carry out applicability tests before bonding, that is, to find a piece (the area can not be too small, to be representative) is coated with good decorative glue by adhesive material. After drying for an appropriate time, touch the adhesive layer gently with your hand. If you always feel that the adhesive liquid is not dry, it can be easily torn after bonding, it may be that the plasticizer content of the material is high. In this case, adhesion cannot be performed, otherwise, adhesion can be performed.


7. Some customers reported that a batch of 899 Hele 1.8L decorative adhesive was used to bond the aluminum plastic plate, but the adhesive was not strong. The ambient temperature is about 6 ~ 7℃, and the drying time is about 15min. The construction worker is an old woodworker.
Answer: Aluminum plastic plate is double-sided smooth and dense material, poor air permeability. If the glue after drying time is not enough, the solvent in the adhesive layer is not fully volatilized, two bonding surface bonding, the unvolatilized solvent will continue to emit outwarwards, encounter air tight smooth aluminum surface can not be penetrated, slowly accumulated together, the formation of larger bubbles. This kind of bubble, will lead to the adhesive part of the glue, especially when the temperature rises or direct sunlight is more obvious.
Solution: First of all, when brushing glue, glue layer should be as thin as possible, but not lack of glue, if the bonding area is larger, must be two people respectively on both sides at the same time. Secondly, the drying time should be enough to make the solvent fully volatile in the glue. Finally, after bonding, try to keep the adhesive in a ventilated environment, and do not let the ambient temperature rise quickly or be exposed to direct sunlight. In addition, if the aluminum plastic board is bonded, it is recommended to use our company's Noble neoprene adhesive, which has a better bonding effect on the aluminum plastic board.


8, a user with 899 environmental decorative glue for home decoration, glue the door line, about a month later, the edge of the individual door line there are signs of opening glue, with a hand tear, the door line fell off. What is the reason? Is there a quality problem with the glue?
A: After field inspection by the company's after-sales service personnel, it was found that the glue was not evenly applied on the door line. In some places, the glue was too thick and not dried out, and in some places, there was a lack of glue.
Solution: pay attention to the construction, glue should be coated, and can not be thick, drying time is appropriate, generally will not appear glue phenomenon.


9, a user bought 2 barrels of 899 glue, stick 1.2m×2m aluminum plastic board and woodworking board, a month later, a board in the middle of the drum. Now it's coming off. The rest of it's coming off. Nail it in. Workers do this work every day, thinking that it must be the quality of the glue.
A: Ask the user about the operation in detail, including bonding material, drying time, bonding environment, etc. It was later learned that the user was decorating the wall outside, and the glued surface had direct sunlight, which did not meet the environmental requirements of 899 product bonding operation. Should avoid direct sunlight, and the amount of glue, drying time should be moderate.


10, a user uses Hele 7L specification 899 glue to stick the cork floor on the cement floor, no viscosity.
A: After asking the user in detail, they learned that the glue was dried for 1 hour before it was glued. The time was too long and the glue was completely dry without initial adhesive force. Should be left for about 15 minutes, with the adhesive layer slightly non-stick hand prevail.


11, a decoration company with decorative glue in the outdoor glue artificial lawn, found that the glue has bubbling phenomenon and stick on a pull open.
A: Decorative adhesive is mainly used in interior decoration. It has been explained on the packaging bucket that this product should not be used in the place where the sun is direct, and the plastic material may contain plasticizer. The amount of plasticizer will directly affect the bonding effect.


12, a user feedback: bought a bucket of 7L decorative glue, sticky aluminum frame, no sticky, sticky.
Answer: 899 adhesive metal effect is slightly poor, adhesive wood material effect is the best. After asking the user, about 1 minute after the glue will be glued. This is the wrong operation method, after gluing to air 8 to 15 minutes, the adhesive layer is slightly not stick to the hand to stick. Please read the instructions carefully before using.


13, a user with 899 adhesive Cali board and calcium silicate board, glued the second day after a tear open, think that there is a quality problem.
A: Two photos of the scene were sent back. According to the photos, the glue should be too thick. The service staff tested it on the scene and confirmed that the glue was too thick. According to the normal amount before coating test, the bonding effect is very good.


14, the customer uses 899 glue, the construction environment temperature is about 10 degrees below zero, the glue dries too fast, what is the solution?
Answer: Under such environmental conditions, the glue does not dry too fast, but the temperature is too low. The glue thickens and is not easy to flow. It is recommended not to construct under these environmental conditions.


15, a customer with 899 adhesive aluminum plastic plate, there is an open edge or bulge problem, what may be the reason?
A: According to the photo observation, it is too long after gluing, the glue layer has dried out, and there is no trace of bonding in most places.


16, the user asked: 899 glue can be glued to PVC? I used another brand of product. It hasn't dried for days. The surface is sticky.
A: If it is hard, most can stick, if it is soft, to try. Now this phenomenon is not stick, PVC plasticizer and the solvent in the adhesive reaction, migration to the surface. The plasticizer has a high boiling point, is non-volatile and sticky. Can choose the good chloroprene glue to try.