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【pet吹瓶机】塑料瓶设计贴标过程中需注意的细节是什么
发布日期:2017-10-23

  【pet吹瓶机】塑料瓶设计、贴标过程中需要注意以下几个细节:1)在设计挤压式塑料瓶时,如果材质为高密度聚乙烯或聚丙烯,塑料瓶的横截面应为矩形或椭圆形,对于材质为低密度聚乙烯或其他柔性塑料瓶,其横截面以圆形为好。这样便于内容物从塑料瓶内挤出。与塑料瓶口配合使用的塑料件主要为瓶盖和密封器。塑料瓶口的设计应重点考;虑如何使塑料瓶口能更好地与盖和密封器配合塑料瓶的底部,是塑料瓶力学性能的薄弱部位。因此,塑料瓶的底部一般设计成内凹形;塑料瓶的转角处,及内凹处,均做较大的圆弧过度。为便于塑料瓶的堆放,增加塑料瓶的堆码稳定性,塑料瓶的底部应设计内凹槽。2)塑料瓶表面采用标贴时,应使标贴面平整。可在塑料瓶表面设计一个“框格”,使标贴准确定位,不产生移动。在吹塑成型时,型坯吹胀首先接触的部位,总是趋于先行硬化的部位。因此该部位的壁厚也大一些。边缘与转角部位,是型坯吹胀最后接触的部位,该部位的壁厚较小。因此塑料瓶的边缘和抹角部位应设计成圆角。改变塑料瓶的表面形状,如塑料瓶中部相对地细一些,增加塑料瓶的表面的周向凹槽或凸筋,可提高塑料瓶的刚度和耐弯曲性。纵向的凹槽或加强筋,可消除塑料瓶在长期负荷下的偏移、下垂或变形现象。3)塑料瓶的印刷面,是消费者注意力最集中的部位。印刷表面应平整、连续;如果塑料瓶含有手柄、凹槽、加强筋等结构,设计时应注意不能给印刷操作造成不便。椭圆形塑料瓶,刚度也较高,但模具的制造费用较高。因此为保证塑料瓶的刚度,除选择刚度高的材料外,还要通过塑料瓶的外形设计,增强塑料瓶的刚度和耐负荷强度。4)由于大多数塑料具有凹口敏感性,塑料瓶在尖角处、口部螺纹的根部、颈部等部位,容易产生裂缝和开裂现象,所以这些部位应设计成圆角。对于矩形塑料瓶的转交处,需要支撑塑料瓶的大部分负荷,因此局部增加该处的壁厚,还有利于提高塑料瓶的刚度和耐负荷强度的。
  【Plastic bottle design, pet bottle blowing machine】labeling process need to pay attention to the following details: 1) when designing extrusion type plastic bottles, if is made of high density polyethylene or polypropylene, plastic bottles of cross section should be rectangular or oval, low density polyethylene or other flexible material for plastic bottle, its round cross section as well. This allows the content to be squeezed out of the plastic bottle. The plastic parts used in conjunction with plastic bottles are mainly bottle caps and seals. The design of plastic bottle mouth should be focused on; It is a weak part of the mechanical properties of plastic bottle to consider how to make plastic bottle mouth better with lid and seal with the bottom of plastic bottle. Therefore, the bottom of the plastic bottle is generally designed as a concave shape; The corner of plastic bottle, and inside concave place, all do bigger circular arc excessive. To facilitate the stack of plastic bottles, increase the stability of plastic bottles, the bottom of the plastic bottle should be designed in the groove. 2) when the surface of the plastic bottle is labeled, the label should be smooth. A "frame" can be designed on the surface of the plastic bottle to accurately locate the label and not generate movement. In blow molding, the first contact part of the billet bulking, always tends to harden. So the wall is a little thicker. The edges and corners are the last contact parts of the billet, and the wall thickness is smaller. Therefore, the edge of plastic bottle and the Angle should be designed into rounded corners. Change the surface shape of the plastic bottle, such as the middle of the plastic bottle, to increase the surface of the plastic bottle to the groove or the convex rib, which can improve the rigidity and bending of the plastic bottle. Longitudinal grooves or reinforcing bars can remove the drift, drooping or deformation of plastic bottles under long-term loads. 3) the printed surface of the plastic bottle is the most concentrated part of the consumer's attention. The printing surface shall be flat and continuous; If the plastic bottle contains handles, grooves and reinforcement bars, the design should be careful not to cause inconvenience to the printing operation. Oval plastic bottle, the stiffness is also higher, but the manufacturing cost of the mold is higher. Therefore, in order to guarantee the stiffness of plastic bottle, in addition to the materials with high stiffness, the plastic bottle should be designed to enhance the stiffness and load resistance of plastic bottles. 4) since most plastic has the notch sensitivity, plastic bottles at the sharp corners, mouth thread roots, in areas such as the neck, prone to fracture and cracking phenomenon, so these parts should be designed with rounded corners. For the transfer of rectangular plastic bottle, most of the load of plastic bottle needs to be supported, so the wall thickness of the part should be increased locally, and the stiffness and load resistance of the plastic bottle can be improved.
  以上内容由西安市铭德塑料包装机械无锡体彩网整理提供。铭德机械专业生产制造吹瓶机,高速吹瓶机,自动吹瓶机,全自动吹瓶机,热罐装吹瓶机,半自动吹瓶机,pet吹瓶机,塑料吹瓶机,吹瓶设备,吹瓶机厂,中空吹塑机,注塑机,瓶坯模具,瓶盖模具及配套设备,吹瓶机厂家,直销吹瓶机价格优惠,保障品质.咨询电话:13022665258 ;联系人:郭总
  The above contents are provided by xi 'an mingde plastic packaging machinery co., LTD. Minteq machinery specialized in the production of manufacturing bottle blowing machine, high-speed bottle blowing machine, automatic bottle blowing machine, automatic bottle blowing machine, hot canned bottle blowing machine, semi-automatic bottle blowing machine, pet bottle blowing machine, plastic bottle blowing machine, bottle blowing equipment, bottle blowing factory, hollow blow molding machine, injection molding machine, bottle preform mould, cap mould and corollary equipment, bottle blowing factory, direct bottle blowing machine price, guaranteed quality. Consultation telephone: 13022665258; Contact: guo general

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