CN104960041B - 一种竹纹外盖的生产工艺 - Google Patents
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Abstract
本发明公开了一种在不增加外盖厚度的前提下可使外盖能够直接成型有竹纹纹路，无需另购置一竹纹装饰壳的竹纹外盖的生产工艺，其通过如下步骤实现：1)选料，2)竹方成型，3)切片，切片出其厚度为0.15mm‑0.18mm的薄竹皮，4)烘干，得到含水量在8‑12％的干燥竹皮，5)对干燥竹皮进行一面为防霉防水胶和另一面为粘结胶的双面涂胶处理，6)注塑前处理，将无纺布粘贴在涂胶竹皮上，之后在无纺布的表面依次涂上一层光油和一层粘结剂，7)模内注塑，得到其厚度为0.85‑0.90mm的，竹皮与塑胶为一体的竹纹外盖。
Description
技术领域
本发明涉及一种外盖的生产工艺，特别涉及一种外盖为竹纹的生产工艺。
背景技术
随着科技的发展和社会的进步，现手机后盖、笔记本后盖、汽车内饰件(如档位控制板、汽车内门把手等)等外盖日新月异，年轻人也对视觉感观要求越来越挑剔，传统的外盖产品已无法满足大众年轻人的需求，迫切需求更具装饰效果的个性产品。
由此，市面上的外盖，其款式和纹路多种多样，该各种款式或纹路的外盖大多是由塑胶材料注塑成型，其中采用模内镶件注塑工艺的外盖受到广泛青睐，此模内镶件注塑工艺可使外盖的图案纹路不易刮花，整体质量较轻，且强度高的超薄体。该模内镶件注塑工艺的主要原理是在薄膜的表面上涂覆一层图案层，然后再将具有图案层的薄膜放入注塑模具内与塑胶一体注塑成型，最后脱膜即可形成模内镶件注塑外盖。
现年轻人为了更加贴近自然，返璞归真，外盖具有竹纹已成为当时的潮流，然而，现外盖的装饰面均无竹纹效果。为了满足外盖的竹纹纹路，一般在外盖的装饰面上套装一具有竹纹纹路的装饰壳，此装饰壳的设置一方面增加了使用成本，另一方面也增加了产品的整体厚度，特别对于手机和笔记本来说厚度的增加已失去原有手机和笔记本薄、轻的设计理念。
有鉴于此，本发明人对上述问题进行深入研究，遂于本案产生。
发明内容
本发明的目的是提供一种竹纹外盖的生产工艺，其在不增加外盖厚度的前提下可使外盖能够直接成型有竹纹纹路，无需再另外购置一竹纹装饰壳，设计较人性化。
为了实现上述目的，本发明采用如下技术方案：
一种竹纹外盖的生产工艺，通过如下步骤实现：
1)选料：选取其外观光滑、圆润的老山竹；
2)竹方成型：
a、将步骤1)的老山竹进行切片，切片时沿老山竹的圆周方向均匀分切成若干片竹片，且各竹片的长度保持一致；
b、将各竹片放入其上端呈开口状的软化水池中，放置后盖上顶盖将软化水池密封，对密封的软化水池内进行加热软化，加热温度为50-70℃；
c、取出加热后的竹片，并对竹片表面进行全面涂胶，涂胶后放置于其成型腔室为正方形的成型模具内，放置时先在成型腔室的腔底上放置一层竹片层，此竹片层由若干片紧密排列在一起的涂胶后竹片构成，此竹片层的四侧面与方形水池的四侧壁相贴紧配合，然后由下而上依次叠放若干层竹片层，且相邻竹片层中上下设置的各竹片一一对应紧密相叠配合，而且，成型腔室内各竹片的纹理方向相同；
d、对成型腔室内的竹片进行高压压合，形成竹方；
3)切片：将步骤2)的竹方放置在刨削机上进行刨削，刨削出其厚度为0.15mm-0.18mm的薄竹皮；
4)烘干：将步骤3)中所得的薄竹皮进行烘干，得到含水量在8-12％的干燥竹皮；
5)涂胶：将步骤4)的干燥竹皮用双面涂胶机进行双面涂胶处理得到涂胶竹皮，且涂覆在干燥竹皮一面上的胶体为防霉防水胶，涂覆在干燥竹皮另一面上的胶体为粘结胶；
6)注塑前处理：先将与步骤5)所得的涂胶竹皮的尺寸相吻合的无纺布通过涂胶竹皮上的粘结胶涂胶后将与干燥竹皮的尺寸相吻合的无纺布通过涂胶竹皮上的粘结胶粘合在涂胶竹皮上，之后在无纺布的表面依次涂上一层光油和一层粘结剂，固化，最后裁切，裁切出与外盖的尺寸相吻合的片体；
7)模内注塑：将步骤6)所得的片体放置模内注塑模具内进行模内镶件注塑成型，放片时将片体具有粘结剂的一面朝向模内注塑模具的塑料成型腔室，成型后取出的成型件即为竹皮与塑料为一体的竹纹外盖，且该竹纹外盖的厚度为0.85-0.90mm。
步骤7)注塑完成后还可在竹皮的防霉防水胶层依次喷涂防指纹涂层和其光泽度为8-14度的哑光漆层。
本发明的一种竹纹外盖的生产工艺，具有如下有益效果：
一、将竹皮与塑胶件一体注塑成型，使外盖在不增加厚度的前提下具有竹纹纹路，无需另外增加一具有竹纹纹路的装饰壳，使用成本较低，并不会手机的整体重量和厚度增加，设计较人性化；
二、由于成型腔室内各竹片的纹理方向相同，且各竹片进行规则的叠加可使刨削出来的每一竹皮的纹路和图案大致相同，可保证外盖成品质量的一致性；
三、通过竹皮使外盖在碰撞中具有较好的缓冲作用，不易损坏整体外观，且放置于桌面时无磕碰声，同时还具有较强的耐磨性，有效地保护外盖，防止磨损；
四、在步骤6)中通过无纺布一方面可增加竹皮的强度，在运输中不易受损，另一方面，在注塑成型时可方便竹皮与塑胶粘接；同时通过光油可起到隔热作用，以防注塑过程中因注塑高温传递给竹皮而造成竹皮变色的问题。
具体实施方式
本发明的一种竹纹外盖的生产工艺，通过如下步骤实现：
1)选料：选取其外观光滑、圆润的老山竹；
2)竹方成型：
a、将步骤1)的老山竹进行切片，切片时沿老山竹的圆周方向均匀分切成若干片竹片，且各竹片的长度保持一致；
b、将各竹片放入其上端呈开口状的软化水池中，放置后加入水，并没过竹皮，盖上顶盖将软化水池密封，对密封的软化水池内的水进行蒸汽加热，加热温度为50-70℃；
c、取出加热后的竹片，晾干，之后对竹片表面进行全面涂胶，涂胶后放置于其成型腔室为正方形的成型模具内，此竹片的放置规则是先在成型腔室的腔底上放置一层竹片层，此竹片层由若干片紧密排列在一起的涂胶后竹片构成，此竹片层的四侧面与方形水池的四侧壁相贴紧配合，然后由下而上依次叠放若干层竹片层，且相邻竹片层中上下设置的各竹片一一对应紧密相叠配合，而且，成型腔室内各竹片的纹理方向相同；
d、对成型腔室内的竹片进行高压压合，形成竹方，优选的是对成型腔室内最顶层的竹片层向下施加5吨的压力；
3)切片：将步骤2)的竹方放置在刨削机上进行刨削，刨削出其厚度为0.15mm-0.18mm的薄竹皮；
4)烘干：将步骤3)中所得的薄竹皮进行烘干，得到含水量在8-12％的干燥竹皮；
5)涂胶：将步骤4)的干燥竹皮用双面涂胶机进行双面涂胶处理得到涂胶竹皮，且涂覆在干燥竹皮一面上的胶体为防霉防水胶，涂覆在干燥竹皮另一面上的胶体为粘结胶；
6)注塑前处理：先准备与步骤5)所得的涂胶竹皮的尺寸相吻合的无纺布，再将无纺布通过涂胶竹皮上的粘结胶粘合在涂胶竹皮上，之后在无纺布的表面依次涂上一层光油和一层粘结剂，固化，最后裁切，裁切出与外盖的尺寸相吻合的片体；
7)模内注塑：将步骤6)所得的片体放置模内注塑模具内进行模内镶件注塑成型，放片时将片体具有粘结剂的一面朝向模内注塑模具的塑料成型腔室，成型后取出的成型件即为竹皮与塑料为一体的竹纹外盖，且该竹纹手机后的厚度为0.85-0.90mm。
本发明的一种竹纹外盖的生产工艺，具有如下有益效果：
一、将竹皮与塑胶件一体注塑成型，使外盖在不增加厚度的前提下具有竹纹纹路，无需另外增加一具有竹纹纹路的装饰壳，使用成本较低，并不会使手机的整体重量和厚度增加，设计较人性化；
二、由于成型腔室内各竹片的纹理方向相同，且各竹片进行规则的叠加可使刨削出来的每一竹皮的纹路和图案大致相同，可保证外盖成品质量的一致性；
三、通过竹皮使外盖在碰撞中具有较好的缓冲作用，不易损坏整体外观，且放置于桌面时无磕碰声，同时还具有较强的耐磨性，有效地保护外盖，防止磨损；
四、在步骤6)中通过无纺布一方面可增加竹皮的强度，在运输中不易受损，另一方面，在注塑成型时可方便竹皮与塑胶粘接；同时通过光油可起到隔热作用，以防注塑过程中因注塑高温传递给竹皮而造成竹皮变色的问题，另通过光油上的粘胶剂层可进一步提高竹皮与塑胶的结合；
五，通过本发明工艺制成的竹皮可使竹皮与塑胶注塑成型时无需对传统薄膜的模内镶件注塑工艺进行过多的更改。
本发明中，该步骤7)注塑完成后还可在竹纹外盖的防霉防水胶层上喷涂防指纹涂层，利用此防指纹涂层使外盖使用时竹皮表面无指纹附着；同时，还可在防指纹涂层上喷涂一层其光泽度为8-14度的哑光漆层，利用此哑光漆层一方面可增加外盖的光泽度，另一方面可提高整体的手感，手感较佳。并达到防油防污的效果。
本发明中，在步骤2)的切片过程中，最好先将老出竹在纵向方向进行切割成若干段，然后再对每一段进行周向方向的均匀间隔切片处理。
本发明中，在步骤5)的双面涂胶工序前可对干燥竹皮的四周进行修边裁切的精加工。
本发明中，在步骤2)的软化过程中可根据自身所需的颜色进行确定加热时间，因加热时间不周可使竹皮颜色发生变化。若采用曼谷竹的话最佳加热时间为24小时。
本发明的竹纹外盖的生产工艺可适用于手机后盖、笔记外盖和汽车内饰件，汽车内饰件可包括档位控制板、汽车内门把手等塑胶件。
上述实施例并非限定本发明的方法，任何所属技术领域的普通技术人员对其所做的适当变化或修饰，皆应视为不脱离本发明的专利范畴。
Claims (2)
1.一种竹纹外盖的生产工艺，其特征在于：通过如下步骤实现：
1)选料：选取其外观光滑、圆润的老山竹；
2)竹方成型：
a、将步骤1)的老山竹进行切片，切片时沿老山竹的圆周方向均匀分切成若干片竹片，且各竹片的长度保持一致；
b、将各竹片放入其上端呈开口状的软化水池中，放置后，盖上顶盖将软化水池密封，对密封的软化水池内进行加热软化，加热温度为50-70℃；
c、取出加热后的竹片，并对竹片表面进行全面涂胶，涂胶后放置于其成型腔室为正方形的成型模具内，放置时先在成型腔室的腔底上放置一层竹片层，此竹片层由若干片紧密排列在一起的涂胶后竹片构成，此竹片层的四侧面与成型模具的成型腔室的四侧壁相贴紧配合，然后由下而上依次叠放若干层竹片层，且相邻竹片层中上下设置的各竹片一一对应紧密相叠配合，而且，成型腔室内各竹片的纹理方向相同；
d、对成型腔室内的竹片进行高压压合，形成竹方；
3)切片：将步骤2)的竹方放置在刨削机上进行刨削，刨削出其厚度为0.15mm-0.18mm的薄竹皮；
4)烘干：将步骤3)中所得的薄竹皮进行烘干，得到含水量在8-12％的干燥竹皮；
5)涂胶：将步骤4)的干燥竹皮用双面涂胶机进行双面涂胶处理得到涂胶竹皮，且涂覆在干燥竹皮一面上的胶体为防霉防水胶，涂覆在干燥竹皮另一面上的胶体为粘结胶；
6)注塑前处理：先准备与步骤5)所得的涂胶竹皮的尺寸相吻合的无纺布，再将无纺布通过涂胶竹皮上的粘结胶粘合在涂胶竹皮上，之后在无纺布的表面依次涂上一层光油和一层粘结剂，固化，最后裁切，裁切出与外盖的尺寸相吻合的片体；
7)模内注塑：将步骤6)所得的片体放置模内注塑模具内进行模内镶件注塑成型，放片时将片体具有粘结剂的一面朝向模内注塑模具的塑料成型腔室，成型后取出的成型件即为竹皮与塑料为一体的竹纹外盖，且该竹纹外盖的厚度为0.85-0.90mm。
2.根据权利要求1所述的一种竹纹外盖的生产工艺，其特征在于：步骤7)注塑完成后还可在竹纹外盖的防霉防水胶层上依次喷涂防指纹涂层和其光泽度为8-14度的哑光漆层。
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