Poly l lactic acid is a synthetic Dermal Filler that is injected into your face, causing your body's own production of collagen. This type of dermal filler is known as a stimulator. This non-toxic, biodegradable substance has been used for more than 40 years as suture material.
As we age, the fat, muscles, bone, and skin in our face begins to thin. This loss of volume leads to either a sunken or sagging appearance of the face. Injectable poly-l-lactic acid is used to create structure, framework, and volume to the face. PLLA is known as a bio-stimulatory dermal filler, this means it stimulates your own skin to produce new collagen. Over time your skin breaks down PLLA into water and carbon dioxide. The effects of PLLA appear gradually over a few months, producing natural results.
What should first be done before considering injectable poly-l-lactic acid?
First, an dermatologist will review the patient`s medical history and examine the condition to be treated. Areas to be treated should be kept clean. If there is a skin infection, then treatment needs to be postponed until it resolves. Patients who take blood thinners (such as aspirin, ibuprofen, certain herbal medications) should stop them two weeks prior to injection with the approval of their prescribing doctor.
Your doctor will evaluate the areas of your face needing improvement in structure and/or volume. Topical or injection numbing medication may be used for added comfort prior to your procedure. For additional patient comfort lidocaine, an anesthetic, is mixed with PLLA prior to the treatment. Using a syringe, poly-l-lactic acid is injected into the hollow areas of your face and/or areas requiring improved structure. Multiple treatment sessions with PLLA are needed which are often spaced at one month intervals. The effects of PLLA typically last up to 24 months. After that, additional injections are required to maintain the effect.
Is injectable poly-l-lactic acid painful?
Topical numbing agents or anesthetic injections are sometimes applied to ease discomfort. Also, lidocaine is commonly added to PLLA for improved patient comfort. Before and following treatment, ice may be given to ease discomfort and swelling. Patients are encourage to massage the treatment areas for the first 5 days, 5 times a day, for 5 minutes each. We call this the 5-5-5 rule.
What can I expect after having had PLLA?
PLLA fillers are temporary, lasting up to two years, depending on the patient. Most patients require maintenance treatments to achieve the best results.
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Printing - the most basic and important process of packaging design
The packaging box has become an essential element in product sales, playing a crucial role in attracting customers and protecting the product. However, creating a high-quality packaging box is not just about a creative design—it involves a series of complex production steps. A well-crafted packaging box is the result of several stages, including design, pre-press preparation, color separation, plate making, printing (such as embossing, hot stamping, and lamination), die-cutting, and final assembly. Therefore, designers need not only strong artistic skills but also a solid understanding of the printing process to ensure the final product meets expectations. This knowledge is fundamental in the field of packaging design.
When it comes to the printing process for packaging boxes, the focus is typically on the printing of the paper used. There are two main methods currently used: letterpress printing and offset printing. Letterpress includes traditional lead and copper plate printing, while offset printing is considered more advanced. Offset presses can be small or large, depending on the scale of production.
1. **Letterpress Printing in Packaging Design**
In letterpress printing, black-and-white drafts are essential. These drafts are created based on the original color design, with the key difference being that they show the contrast between colors. They are then used directly for photographic exposure. If the black-and-white draft is not properly drawn or does not match the original, it can negatively affect the final print. The cutting lines must also be carefully planned—typically 3mm wide. If the artwork is printed edge-to-edge without a white border, a bleed of 2-3mm should be added during the black-and-white drafting stage. This ensures that no white edges appear after cutting. Additionally, the net size line (final cut line) and hairline (registration line) must be clearly marked. A crosshair should be placed in the center of the manuscript to help with imposition during plate making.
2. **Offset Printing Plate Design**
For offset printing, the design can be directly converted into a manuscript. Color images from the original can be scanned and processed digitally. Whether it’s embossing or regular offset printing, each packaging box has its own unique requirements. It's important to draw the carton structure and create an imposition map as needed. The structure drawing is used for knife cutting, and after printing, the finished product is cut and folded using a die-cut machine. Therefore, the knife pattern must align perfectly with the design. Any error in the structural lines could cause misalignment during the folding process, resulting in an uneven box surface. The imposition map is created according to the printing press specifications. For example, if the original layout is six pages, but the press can only handle four, the layout must be adjusted accordingly, with a 3mm trimming margin between each section. Also, a 10mm paper bite should be left for the press to grip the sheet. Before the plates are made, it’s also necessary to leave a 10mm margin for trimming. In many cases, the knife pattern and imposition map can be combined into one layout.
Both letterpress and offset printing are widely used in the industry. Letterpress is often done on smaller, semi-manual machines, while offset printing is more common for larger-scale production. Because of their different processes, the design requirements vary. Before starting the design, it’s important to determine which printing method will be used. This decision significantly impacts the layout, bleeds, and other technical details. Understanding these differences is crucial for achieving a successful packaging design.
If you want to learn more about the latest trends and techniques in packaging design, stay tuned to China Packaging Network for more updates!