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What instead of B-7000 glue? - The glue destroys the housings

ziom779 35124 11
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  • #1 18255272
    ziom779
    Level 10  
    When gluing flaps, glass with the screen - replacements for housing elements - in the Samsung Galaxy S7, the colored foil wrinkles and it comes out unethically. See what's going on in the attachment.
    I used the Zhanlida B-7000 and BU LAI EN. There is a crap with everyone. It doesn't matter how long I wait for the glue to dry. It wrinkles immediately and always.

    Is there any other glue I can use in place of the B-7000?


    What instead of B-7000 glue? - The glue destroys the housings What instead of B-7000 glue? - The glue destroys the housings What instead of B-7000 glue? - The glue destroys the housings
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    • What instead of B-7000 glue? - The glue destroys the housings IMG_20191103_103317.jpg (3.66 MB) You must be logged in to download this attachment.
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  • #2 18255398
    KaW
    Level 34  
    You need to report to the samsung company.
  • #3 18255406
    ziom779
    Level 10  
    I have already found one option - Pattex Total glue.
    Report to Samsung? I think for tapes-gaskets. There is no any glue pre-installed in this phone.
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  • Helpful post
    #4 18255712
    staś pytalski
    Level 41  
    The problem appears in the process of disassembling, opening, removing the glue from the gaskets, which is very strong, when trying to peel the tapes / gaskets from the original flaps, the paint sometimes comes off the flap along with the gasket. If it heats up badly or if it is badly undermined, the paint may start to wrinkle. When removing the flap stuck to the B7000, I had no problem if I nicely peeled off the original gasket. Maybe you heat the elements too much when disassembling?
  • #5 18255771
    ziom779
    Level 10  
    This is not a disassembly problem. If I have an original flap, it does not wrinkle.
    What you are talking about is tearing off the paint when removing the tapes from the original flaps or when disassembling (incidentally, the black flaps have the softest paint) .. I do not tear the tapes from the originals, because there is less than a 50% chance that the original tape will not come off together with paint ... I damaged in this way from 4-5 golden flaps. In my opinion, such tapes will only be used warm. So I just clean the adhesive off the tape with isopropanol, cold, and pour b7000 on the seal.

    I almost always tear off the tapes from non-original flaps (they barely stick), and the b7000 glue then wrinkles the foil at the point of contact with the flap / glass (non-original).
    This is not a heating problem, because the camera cover and the flap stick "when cold".

    My guess is that you had this heating in mind when dismantling the old tapes in the originals. But here it is about replacements and gluing this crap. Nothing wrinkles the original.

    Apparently there is this Pattex Total in castorama. Tomorrow I will post whether it is better glue. Apparently, it dries roughly in an hour, cures under the influence of moisture in the air and is solvent-free, which - I suppose - in the b-7000 is responsible for this wrinkling. It is also quite cheap: 50G PLN 16-17. It's only 2x more expensive than the b-7000.
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  • #6 18259089
    staś pytalski
    Level 41  
    Just think if you have to, or someone after you will open the flap pasted on Patex. Maybe when you pour B7000 adhesive on an old gasket, it causes it to react with the gasket and to behave in such a way that the paint eventually wrinkles.
    You can test with the temperature to skillfully remove the glue, you can buy nail polish in the color of the flaps and mold the flaps, and it is worth mentioning to the customer that the paint may chip, etc. during disassembly.
  • #7 18259293
    ziom779
    Level 10  
    The paint is creasing without the gasket on the replacement. There was a topic on the electrode that someone had a problem with disassembly on b-7000 glue and was recommended - as trouble-free to peel off - at Pattex Total.

    I already ordered it. It wasn't in Castorama. I'll be testing tomorrow.
  • #8 20296314
    Aress124
    Level 28  
    Do you recommend this Pattex Total? Any pros and cons?
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  • #10 20299378
    bogdan2491
    Level 22  
    You're squeezing too hard, at s6/s7 I actually noticed a slight ripple as I squeezed harder. grab something weaker, because these clamps are too strong.
  • #11 21046732
    Marcin7dudka
    Level 10  

    >>18259293
    What is the best solvent for ungluing displays glued with B-7000 glue? and at what maximum temperature should HotAir be set so as not to damage the display? Because I can't take the screen apart and I heat it at 180°C with a heat gun that has an adjustment range from 50°C to 650°C, and I read that displays are damaged at 300°C?

    Added after 1 [minute]:

    >>18259293
    What is the best solvent for ungluing displays glued with B-7000 glue? and at what maximum temperature should HotAir be set so as not to damage the display? Because I can't take the screen apart and I heat it at 180°C with a heat gun that has an adjustment range from 50°C to 650°C, and I read that displays are damaged at 300°C?

    Added after 3 [minutes]:

    Previously, when I didn't have a heat gun, I used a hair dryer, but the heat gun produces a higher temperature. These two methods worked without any problems with the phone glued by the factory, but I can't cope with the B-7000 glue.
  • #12 21047968
    Vortex1987
    Level 25  
    The paint on the flaps in the S7 is crap and will wrinkle sooner or later.
    . It`s best to dig in from the bottom, where the charging port is, and gently pry it with a plastic pen, dipping it in isopropanol and using hot air.

Topic summary

✨ The discussion revolves around issues faced when using B-7000 glue for repairing Samsung Galaxy S7 housings, specifically regarding the wrinkling of colored foil during the gluing process. Users report that the glue causes the paint to wrinkle, particularly when using non-original flaps. Alternatives such as Pattex Total glue are suggested, with some users expressing hope that it will perform better without causing damage. The conversation also touches on the challenges of disassembling the device without damaging the paint and the importance of careful handling during the process. Recommendations include using isopropanol to clean adhesive residues and adjusting the application technique to avoid excessive pressure that may lead to paint creasing.
Generated by the language model.

FAQ

TL;DR: On S7 replacements, B‑7000 can wrinkle paint; Pattex Total 50 g costs PLN 16–17 and "dries roughly in an hour." A solvent‑free adhesive helps avoid wrinkling. [Elektroda, ziom779, post #18255771]

Why it matters: This helps phone repairers stop wrinkled foil/paint and choose service‑friendly adhesives for Galaxy S7 repairs.

Quick Facts

What glue should I use instead of B‑7000 on a Galaxy S7?

Use a solvent‑free option such as Pattex Total on replacement parts. It “dries roughly in an hour” and cures with ambient moisture. A 50 g tube costs about PLN 16–17. Users explored it after B‑7000 and BU LAI EN wrinkled paint on non‑original flaps. [Elektroda, ziom779, post #18255771]

Does the Galaxy S7 use glue or adhesive tapes originally?

The S7 does not come with factory liquid glue for the back. It uses adhesive tapes and gaskets. Source pre‑cut gaskets if you want OEM‑style reassembly. [Elektroda, ziom779, post #18255406]

Why does B‑7000 wrinkle the colored foil or paint on aftermarket flaps?

Users saw immediate wrinkling when B‑7000 touched non‑original flaps. Solvent content is blamed for attacking the paint or foil. Originals did not wrinkle under the same process. Black flaps were noted as having the softest paint. [Elektroda, ziom779, post #18255771]

How do I reduce ripples when using liquid glue?

Reduce clamping force. Over‑squeezing creates ripples on S6/S7 parts. Use weaker clamps or a gentler squeeze during cure. “You’re squeezing too hard” was the diagnosis when ripples increased with pressure. [Elektroda, bogdan2491, post #20299378]

What solvent should I use to unglue B‑7000?

Use isopropanol with hot air and a plastic pick. “It’s best to dig in from the bottom… dipping it in isopropanol and using hot air.” How‑To:
  1. Warm the edge with hot air while keeping airflow moving.
  2. Insert a plastic pick at the bottom, wetted with isopropanol.
  3. Work around the perimeter, reapplying isopropanol and heat as needed. [Elektroda, Vortex1987, post #21047968]

What hot‑air temperature is safe when ungluing a B‑7000 display?

One user heated at 180°C and could not separate a B‑7000 screen. Their heat gun range was 50–650°C. They also cited damage risk reports near 300°C for displays. [Elektroda, Marcin7dudka, post #21046732]

Where should I start prying the S7 back cover to reduce paint damage?

Start at the bottom near the charging port. Use a plastic tool, dipped in isopropanol, plus hot air. As one tech advises: “dig in from the bottom… dipping it in isopropanol and using hot air.” [Elektroda, Vortex1987, post #21047968]

Can poor heating during teardown cause the paint to wrinkle or lift?

Yes. Factory gaskets are very strong, and bad technique can damage paint. “If it heats up badly or if it is badly undermined, the paint may start to wrinkle.” Apply heat with control and avoid rough prying. [Elektroda, staś pytalski, post #18255712]

Should I reuse original adhesive gaskets or remove them?

Avoid peeling original tapes off painted flaps. The poster reported less than a 50% chance of removing tape without lifting paint. They damaged 4–5 golden flaps that way. Their workaround was cleaning adhesive with isopropanol and gluing over the gasket. [Elektroda, ziom779, post #18255771]

Is Pattex Total easier to reopen than B‑7000 later?

One user referenced a thread recommending Pattex Total as “trouble‑free to peel off.” They ordered it to test after struggling with B‑7000. [Elektroda, ziom779, post #18259293]

Will using Pattex Total make later service harder?

Consider future service. A technician warned to think about reopening a flap glued with Pattex. They suggested refining heat technique and even touch‑up paint if chipping occurs; inform customers of the risk. [Elektroda, staś pytalski, post #18259089]

Why do originals not wrinkle but replacements do?

The poster saw no wrinkling on OEM flaps under the same process. On non‑original flaps, the foil wrinkled immediately upon glue contact. This happened with B‑7000 and BU LAI EN. That points to aftermarket paint or foil sensitivity. [Elektroda, ziom779, post #18255771]

Any specific caution for black S7 flaps?

Yes. The black flaps were called out as having the softest paint. Handle them gently and avoid aggressive tape removal or high clamp force. [Elektroda, ziom779, post #18255771]
Generated by the language model.
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