Self-adhesive label bubbles are phenomena that end users often encounter during labeling. The main causes of this cause are the following: uneven coating of glue: surface material, adhesive and bottom of self-adhesive material The paper consists of three parts, which are composed of surface coating, face material, primer, adhesive, release coating (silicon coating), backing paper, back coating or back printing. Glue coating unevenness is mainly a process trap that occurs when a film supplier coats glue.
1, the labeling machine pressure wheel design is not good, the pressure is not enough: the main components of the general automatic labeling machine include the unwinding wheel, the buffer wheel, the guide roller, the driving roller, the winding roller, the peeling plate and the pressure roller (labeling roller). The process of automatic labeling is that after the sensor on the labeling machine issues a signal for labeling the object to be labeled, the driving wheel of the labeling machine rotates. Since the reel label is in tension on the device, when the bottom paper is pressed against the peeling plate to change the running direction, the label is forced to escape from the bottom paper due to the certain firmness of the material, and the label is ready for labeling. The object is located just below the label, and the label that is out of the liner is evenly applied to the object under the action of the pressure roller. After labeling, the sensor under the reel label signals a stop, the drive wheel is stationary, and a labeling cycle ends. If the pressure roller of the labeling machine has defects in pressure setting or structural design, it will also cause foaming during the labeling process of the self-adhesive label. Please re-adjust the pressure of the pressure roller or coordinate with the manufacturer of the labeling machine;
2, electrostatic effect: For film materials, static electricity will also cause bubbles on the label. There are two main reasons for the occurrence of static electricity: First, it is related to climate and environment. Climate and cold air are the main causes of static electricity. When using self-adhesive labels in the winter in northern China, static electricity is often generated during the labeling process. Static electricity is also generated when materials are rubbed and contacted with materials and related components of the labeler. When labeling on an automatic labeling machine, static electricity can cause air bubbles and affect the labeling effect. If the static electricity is very serious, an electric spark discharge will occur, which is a predisposing factor of the fire, and the electric shock will also cause the operator to malfunction. Advice on static solutions:
1) Reasonably control the temperature and humidity of the operating space, the ideal temperature is 20-22 ° C, and the relative humidity is 50%;
2) Discharge using a copper metal wire. The copper metal wire is located above the material, is grounded after being insulated from the labeling machine, and the electric charge on the sticker is discharged to the ground through the metal wire to reduce the static electricity on the sticker. The figure below shows the installation of copper wires in the bottle and labeling area. In addition, installing the ground wire outdoors is also a method.
In addition, when the transparent film label is attached to the transparent bottle body, bubbles are often generated on the label surface. The transparent bottle body is mainly hard glass or plastic which can be deformed and deformed. The reasons for such bubbles after labeling may be as follows:
(1) The surface of the bottle body is not clean enough and smooth: the bottle body should be washed and dried beforehand. According to the shape of the surface of the bottle body, such as a regular curved surface or a spherical bottle body, it is clamped and fixed by the conveyor belt during labeling, especially flat plastic bottles. ;
(2) There is no suitable film material according to the bottle material: soft bottle should choose PE, PVC, unstretched PP and synthetic materials of PE and PP; hard bottle should choose PET, BOPP , PS fabric;
(3) The speed adjustment and labeling method of the labeling machine is not appropriate: the speed of the bottle should be slightly faster than the labeling speed of the label when labeling, so as to avoid the generation of bubbles. Before the labeling, completely eliminate the static electricity, so that the label is strong and the label is out of the bottom paper. The labeling machine should not be brushed with a brush, sponge roller or vacuum suction. The rubber scraper with a certain strength should be installed in contact with the label, and the scraper should maintain a certain angle and strength. The labeling of the soft bottle body should adjust the relationship between the labeling speed, the blade strength, the angle and the distance;
(4) The selection of the bottom paper is not appropriate: the bottom paper with good smoothness should be selected, such as the bottom paper of PET material, so that the adhesive has good flatness on the surface, and the wettability is good and flat after labeling;
(5) The presence of impurities, plasticizers, glues in the bottle, chemical reaction, activation of the printing surface solvent, etc. will cause the generation of bubbles in the labeling process.
Introduction Of Baby Monitor
Monitoring equipment
Baby monitor is also called baby monitor and baby monitor. The English name is (baby monitor). It is mainly used for monitoring and nursing home and infants. The Baby Monitor, which has been widely used in the European and American markets for 30 years, is a good helper for monitoring and nursing home and infants using modern radio technology.The baby monitor, also known as baby monitor or baby monitor, is a wireless family safety protection system. It is composed of two parts: a carer (also known as the monitoring terminal or baby terminal) and a monitor (also known as the control terminal or parent terminal). By placing a carer in Baobao's room, you can monitor the safety of the baby at any time through the monitor. As a family security product, the baby monitor provides real-time monitoring by using the monitoring terminal's every move, every word and every action of the baby. The monitoring results are sent to the control terminal equipment in the hands of the supervisor through the radio waves of analog signals or digital signals, and are restored to video or audio. By using the baby monitor, parents or guardians no longer need to stay close to the baby or child to know their behaviors, avoid frequent checks that affect the baby's rest, and can immediately detect and deal with abnormal situations when they occur. The baby monitor is not only the best daily care product for infants and young children, but also a necessary good helper for caring for the elderly and patients.
The baby monitor greatly improves the freedom and flexibility of parents' life. With this device, parents can handle other affairs in other rooms or even outdoor courtyards. At the same time, they also know the situation of their children very well, so they don't have to worry all the time, making the baby monitor a good helper for parents. L In addition to baby monitoring, baby monitors are widely used for elderly care and safety protection in supermarkets, offices, companies, schools, families, hospitals and other small places.
Baby Monitor,Bulb Camera Baby Monitor ,Wifi Indoor Bulb Camera,Light Bulb Camera
Shenzhen Fuvision Electronics Co., Ltd. , https://www.szsolarcamera.com