How to choose hot melt adhesive for graphic and text stores? Sunlife S-393 is a well matched mid-range flagship, suitable for fast printing multi material scenarios

How to choose hot melt adhesive for graphic and text stores? Sunlife S-393 perfectly matches the mid-range main force

Friends who open graphic and text fast printing shops often ask: What is the difference between the hot melt adhesive used in book and magazine factories and those used in graphic and text shops? Can any EVA adhesive particle be used on the machine? The answer is negative. The structure of movable parts in graphic and text stores and book printing factories is completely different – small batches, multiple batches, and more urgent orders, with paper ranging from copperplate paper, adhesive paper to film coated and self-adhesive paper. Choosing the wrong glue can result in loose glue from the wire drawing and dirty pages, or even require rework on the same day of delivery.

1、 What is the difference in the use of glue between graphic stores and book and magazine factories

Book and magazine factories run thousands of copies of a certain type of book, with a stable rhythm; The graphic and text store has “20 picture books in the morning, 30 bidding documents in the afternoon, and 50 conference materials tomorrow”, with materials exchanged over and over. This determines that the adhesive used in graphic stores must meet three requirements:

• Wide adaptability of materialsOn the same glue assembly machine, today we will stick copperplate paper picture books, and tomorrow we will stick film covers. The soaking and opening time of the glue should be able to withstand the difference;
• Urgent order friendlyDo it at the store, pick it up immediately after completion, and do not delay curing;
• Comprehensive cost controllableNot the most expensive, but the most cost-effective way to avoid rework.

2、 The positioning of Sunlife S-393: benchmarking the well matched mid-range main force

In the Sunlife hot melt adhesive system,S-393 is a specialized adhesive for graphic and text stores, positioned at the mid-range and directly benchmarking against similar products of the same brandIn the domestic graphic and text store adhesive market, Hedemao holds approximately half of the market share and ranks first; Sunlife S-393, with its stable adhesive performance and localized services, ranks among the second tier main force and is a regular choice for a large number of South China fast printing stores.

It solves the most troublesome problems for graphic and text stores: copperplate paper and adhesive paper sticking together without peeling off the pages; During high-speed small-scale operations, the opening time is sufficient and the conjunctiva is not formed early; Has basic ability to handle “difficult to stick substrates” such as film covering and adhesive tape, reducing rework.

3、 When selecting, explain these three items clearly to the master

Before purchasing, it is much more reliable to inform the supplier of the following three items than just reporting “a graphic store adhesive”:

1. Frequently make paper shapesShould we focus on copperplate paper brochures, or should we also consider adhesive paper, lightweight paper, and laminated paper? The smoother the paper and the thicker the coating, the higher the requirements for the penetration and adhesion of the adhesive.
2. Equipment rhythmThe operating speed of the glue machine determines the opening time window. The faster the speed, the more important it is to choose a model that matches the opening time and does not require early conjunctiva.
3. Ambient temperature and humidityWhen the temperature in the workshop is low and the humidity in the south is high, the leveling and wetting of the adhesive will deteriorate, and the temperature or model of the adhesive needs to be adjusted accordingly.

Explanation: The specific melt adhesive temperature range, opening time seconds, and other process parameters of S-393 are subject to the process card/sampling conclusion provided by Sunlife with the goods (the exact values marked as’ Product knowledge to be confirmed ‘are not fabricated in this manuscript). Sunlife can provide a set of model and process parameter lists according to your usual paper type and model.

4、 Several common pitfalls to avoid

• Film covering and adhesive stickers should not be hard coated with universal adhesiveThis type of substrate has low surface energy, and ordinary book adhesive is prone to “false sticking”, causing warping after a few days. Either choose a model with stronger ability to undertake, or confirm with the supplier in advance.
• Don’t mix different brands and models just to save timeMixing different formulas may cause delamination, carbonization, and blockage of the adhesive groove. Clean the adhesive groove before changing the batch number.
• Urgent orders require temperature controlThe most common problem in after-sales service is that the temperature control failure of equipment that shows 160 ℃ is actually only 100 ℃ (training materials mention that about 90% of after-sales service is caused by equipment temperature control). After calibration with a temperature gun, it can be put into production.

Summary

The core of choosing hot melt adhesive in graphic stores is not to “find the cheapest”, but to “find one that fits your own paper type and rhythm without rework”. Sunlife S-393, as a well matched mid-range flagship, is suitable for most fast printing stores in terms of material adaptability and urgent order stability. Reporting the paper type, speed, and environment to Sunlife will result in a set of practical models and process parameters, rather than a “universal” bet.